Questions regarding follower conversion

The main book mentions conversion but provides no methodology for how to convert people into followers (either "free range" or followers of another God).

Example: One of my players was going around turning water into wine at a large gathering of different people (5000+, most of them not followers of the players). He wanted to know how many people he converted to his follwer pool (since he had spent a considerable amount of Belief in the process, he was very keen on knowing this). We looked it up and there were no rules governing conversion! The book talks about it, but that's it. Anyone have any ideas as to how this is accomplished?

The book does not give a direct follower conversion. But there are two things you must remember.

1. Gods use miracles to perform actions (including converting people)

Your player turned water into wine great....but would that really convert people? Did he save them? Why would people just go worship the god if that is all he did? Jesus turned water into wine but his fellow men still crucified him.

If the wine was made from the blood of the god and people who drank from it would be filled with visions of the god...and would have an inclination to convert then that is a different story. Then you created a miracle which would go directly against their mind. If you succeed then you roll to see how many (in %) convert.

2. Converting people is a conflict. Depending on the GM usually it is a conflict of ideas (My God and his ideas are better than your God and his ideas). It could be a conflict of spirit as well if presented in such a light.

The thing that drives people to be converted to another lord are many things, the cause, the treatment, the fear one has of that being.

It depends on two things specifically, are the things the being is preaching clicking in your brain and does the person have the power to back up his claim.

It's about cause and a little showmanship. If I were to preach that justice is needed as a spice of life to the peasants that have been bullied by horrible barbarians, then by all means it is very possible they'll except my philosophy and join me to save the world.

But of evil barbarians whom desire to war upon people and believe the weak are worthless and the strong are master they might only be willing to accept a righteous task if that god shows them his power and why he deserves to be right.

This might be how it always happens but in rare cases it could go vice versa, the barbarians minds could be changed and the peasants might be too meek to desire to fight or defy anyone.

As a god (In this case and as, at certain times, convoluted as it seems) you must bring about a form of "Campaign" in order to exist. By whatever reason, desire, or purpose you have for your actions one thing remains true, you must convince the public you are worth their time.